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Old 3rd January 2019, 00:18   #54074  |  Link
Snowknight26
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Join Date: Aug 2007
Posts: 1,430
etc6849,

Download WinLister from http://www.nirsoft.net/utils/winlister.html, find the entry that corresponds to that hidden window, then note the process and thread IDs (they're hex, so covert to dec).
Download ProcessExplorer from https://docs.microsoft.com/en-us/sys...ocess-explorer, double click on the process that corresponds to that process ID, then go to the Threads tab and find the thread (TID) that corresponds to the thread ID you noted. The Start Address column should help narrow it down to the offending DLL (which can help narrow it down further).
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